A time series which has a significant upward or downward trend is referred to as:
A)stationary time series
B)non-stationary time series
C)random time series
D)cyclical time series
E)seasonal time series

Question

Quizplus · Accepted Answer

A non-stationary time series has a trend, meaning that it shows a significant upward or downward movement over time. Stationary time series, on the other hand, do not have any significant trends and remain relatively constant over time. Random time series do not show any pattern or trend, while cyclic time series have repeating patterns over a fixed period of time. Seasonal time series show a pattern that repeats over a fixed period of time (e.g. sales of winter clothing increasing in the winter months).

A Time Series Which Has a Significant Upward or Downward